Segmentation fault on "RAILS_ENV=production assets:precompile"

[icr4]

/home/icra/.gem/ruby/2.5.0/gems/sassc-2.0.1/lib/sassc/engine.rb:42: [BUG] Segmentation fault at 0x0000000000000000
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-gnu]

-- Control frame information -----------------------------------------------
c:0065 p:---- s:0385 e:000384 CFUNC :compile_data_context
c:0064 p:0298 s:0380 e:000379 METHOD /home/icra/.gem/ruby/2.5.0/gems/sassc-2.0.1/lib/sassc/engine.rb:42

--- EDIT ----
Excluding CSS files one by one i discovered the problem is my "style.css", but it has no errors, and the stacktrace is not appointing it so i can understand the error.
The CSS compiles well on another project using same version of sass-c. I tried creating a new rails app and it still crashes.

[bolandrm]

Hi, could you make style.css available so that someone might try to reproduce and fix the issue?

[ahorek]

Hi, I have the same problem.

test.css

/*
 *= require_self
*/

div {
    background: image-url('arrow.gif');
}

but if I put that into an .scss file it works fine, that could be a workaround for you.

[icr4]

Hi, I have the same problem.

test.css

/*
 *= require_self
*/

div {
    background: image-url('arrow.gif');
}

but if I put that into an .scss file it works fine, that could be a workaround for you.

They already are .scss, i solved switching back to 'sass-rails' temporarily hoping the problem will get fixed soon.

[halo]

I encounter this with the follwoing .sass file (not.scss)

@font-face
  // If i comment out the following line, there is no segfault
  src: asset-url('some_custom_font.woff') format('woff')

It reminds me of this issue that caused a segfault whenever a pipeline helper was called.

• sprockets 4.0.0.beta9
• rails 6.0.0.rc1
• Ruby 2.6.1
• sassc 2.0.1
• sassc-rails 2.1.2

EDIT This appeared after a bundle update, so I tried to find the culprit by upgrading the mentioned gems one by one. After I did that, the segfault now disappeared. Weird. But I'm happy now ;)

EDIT2 I still have this problem, but intermittently. The problem disappears when I make modifications to SASS in another file, at some other place in the stylesheet assembly. If I make more changes, the problem is back. If I change something, it's gone again. I have not been able to reproduce it reliably though.

[ozgg]

I have this problem too, and it's hard to reproduce it. It happens unexpectedly with different projects and disappears, when I update any file used (just add blank line to any scss file, for example). And it doesn't appear again even after I remove that blank line.

[jkwuc89]

I am getting this segmentation fault consistently within the Rails project I am working on. It results from running: `NODE_ENV=production RAILS_ENV=production bundle exec dotenv 'bin/rails assets:precompile'. The dump/stack trace is attached.

I am using:

• Ruby 2.5.5
• Rails 6.0.0
• macOS Catalina
• Xcode 11 with command line tools installed

sassc_crash_stack_trace.txt

[kernow]

I'm seeing the same issue when precompiling assets on deployment.

• sprockets 4.0.0
• rails 5.2.3
• Ruby 2.5.5
• sassc 2.2.1
• sassc-rails 2.1.2

I only saw this issue after upgrading from sprockets 3.7.2 to 4.0.0. Revert back to sprockets 3.7.2 and the issue goes away.

[adesurirey]

Same issue running RAILS_ENV=production bundle exec rake assets:precompile with Travis CI.

• rails 6.0.1
• sprockets 4.0.0
• Ruby 2.6.5
• sassc 2.2.1
• sassc-rails 2.1.2

[martinezcoder]

I had the same issue upgrading to sass-rails 6.0.0 and finally I fixed it using sprockets 4.

• ruby 2.6.5
• rails 6.0.1
• sass-rails 6.0.0
• sprockets 4.0.0

There is something that is told indirectly in the sprockets upgrading readme:

# In your Rails configuration, prior to Sprockets 4
config.assets.precompile += ["marketing.css"]

This kind of configuration is necessary only if you are using a prior version of Sprockets 4. The upgrading documentation is not warning about the need to remove those kind of lines, but at least in my case, removing them and adding that dependencies in the manifest.js file has fixed the issue.

This post was very useful to understand the changes between versions.

[epipheus]

I've tried with with every permutation I can think of sassc and sass-rails with no love. using manifest.js already. works in dev, no clue why not in production. Attached the vomit from the crash.

precompile.out.txt

[epipheus]

Also, just a note, this was all working on rails 6.0.1 with manifests and gemified assets so I'm sure they aren't the cause, which really make this perplexing for me. sassc I think is the only thing that changed. For some stupid reason I removed the version from my Gemfile. Looking through git for where it went wrong.